2101211543 has 8 divisors (see below), whose sum is σ = 2227962960. Its totient is φ = 1974810240.

The previous prime is 2101211533. The next prime is 2101211561. The reversal of 2101211543 is 3451121012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101211543 - 2¹⁶ = 2101146007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101211533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75113 + ... + 99218.

It is an arithmetic number, because the mean of its divisors is an integer number (278495370).

Almost surely, 2^2101211543 is an apocalyptic number.

2101211543 is a deficient number, since it is larger than the sum of its proper divisors (126751417).

2101211543 is a wasteful number, since it uses less digits than its factorization.

2101211543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175057.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2101211543 is about 45838.9740613814. The cubic root of 2101211543 is about 1280.8253837902.

Adding to 2101211543 its reverse (3451121012), we get a palindrome (5552332555).

The spelling of 2101211543 in words is "two billion, one hundred one million, two hundred eleven thousand, five hundred forty-three".